But bad actors already do this, as there is a monetary incentive to implement adversarial interoperability. There is then an incentive to not scale it up too mu

But bad actors already do this, as there is a monetary incentive to implement adversarial interoperability. There is then an incentive to not scale it up too much, lest that implementation get cut off sooner. For example, I certainly don't think all of the spam ads I see on Faceboot Marketplace are from individual people manually creating accounts and typing them out.